(a) Reduction
(b) Bleaching
(c) Adsorption
(d) Oxidation
Answer:
Which one of the following elements is metalloid
(a) Ge
(b) C
(c) Si
(d) Pb
Answer:
Which one of the following forms of carbon is used in sugar industry
(a) Animal charcoal
(b) Graphite
(c) Lamp black
(d) Wood charcoal
Answer:
Mark the halogen that does not give disproportionation reaction with alkalies
(a) Fluorine
(b) Bromine
(c) Chlorine
(d) Iodine
Answer:
The radioactive noble gas is
(a) Rn
(b) Ne
(c) Xe
(d) He
Answer:
Which one of the following allotropes of the carbon is used in cutting and drilling
(a) Activated charcoal
(b) Carbon black
(c) Graphite
(d) Diamond
Answer:
The book Historia Plantrum is written by
(a) Darwin
(b) Hipporates
(c) Aristotle
(d) Theophrastus
Answer:
Branch of biology which deals with study of heredity and variation
(a) Genetics
(b) Evolution
(c) Histology
(d) Cytology
Answer:
Estimation of age of woody plant by counting annual ring is
(a) Agronomy
(b) Demography
(c) Dendrology
(d) Dendrochronology
Answer:
Flowering plants are grouped under
(a) Pteridophytes
(b) Bryophytes
(c) Cryptogames
(d) Pharnerogames
Answer: